Coastal drilling

It is a kind of greyish yellow powder made of many kinds of natural fiber,filling particles and additives at the appropriate proportion,if you add this products when drilling,with...

Phoegon's cesium formate drilling fluid are made with specific gravity of 2.2 min. are widely drilling and completion fluids

Dear sir/madam: We can provide the following drill pipe acc to API 5D: Size: 2 3/8", 2 7/8",3 1/2",4",4 1/2",5",5 1/2" Grade:E,X,G,S End Type...

Diamond core bits are widely used in the fields of geological exploration, engineering-oriented, hydroelectric and building engineering. Diamond drill bit series include the bits o...

this machine to make holes in the margins of leaves for loose-leaf binding, or make holes in the paperbag, paperboard, calendar, notebook, plasticbag, etc, .for loose-leaf binding